In a mysterious and isolated mountain sanatorium, a group of doctors and unusual patients confront the unknown. Dr. Paul Neemann, a scientist obsessed with the idea of immortality, finds himself on a tightrope between medical ethics and his unchecked ambition. His laboratory, resembling more of a mad scientist's lair than a legitimate hospital, houses a strange cast of characters, including a femme fatale, a werewolf, and a being created from Neemann's experiments.
As the doctor tries to advance in his quest for eternal life, the atmosphere in the sanatorium grows increasingly tense and terrifying. Nights are filled with blood-curdling screams and strange disappearances, and patients begin to undergo unimaginable changes. As the horrors of Neemann's experiments come to light, the secrets of the sanatorium emerge, revealing a dark past that haunts everyone who resides there.
With a blend of horror and science fiction, the protagonists are forced to question their own humanity as they struggle to escape the clutches of a man who has crossed all lines in his desperation to play God. In a tension-filled climax, they must face not only the creatures unleashed from the experiments but also the reality of their own decisions.